Thank you for providing this Rated 5 out of 5 stars
The Australis interface might work better with fat fingers on touchscreen devices (which I suppose was the main reason for its introduction), but it's a clear step backwards in usability for desktop users, especially power users. Thank you very much for providing this great add-on to restore the compactness and functionality that have been removed! It took one Firefox restart, and a bit of toolbar and button rearranging, to get things back the way they were. The elements that it does restore, it seems to restore to a T.
I'd like to stress that I'm not opposed to change in general, and that this is not about looks, but usability. The new menu adds *yet more* steps of indirection than the old Firefox menu (I always wondered how they can claim more and more deeply nested menu structures make stuff easier to access – needing ever more clicks to do the same thing is not easy access!). The tabs, pinned ones in particular, take up a lot more space than before, and the fact that inactive tabs are invisible makes it ever so harder to discern how many, and which ones, are open. Both of these aspects get worse the more tabs you open.
I like some of the other new features that Australis introduced, any many of them you can still include in your interface even when using the Classic Theme Restorer add-on. That's great, and restores some of the customisability that Firefox still claims it values.